Pump



March 10, 1936. w, HUNTER 2,033,577

PUMP Filed Nov. 20, 1933 2 Sheets-Sheet 1 7 x if i 31 ATTORNEY ig Fua' BBwfffw March 10', 1936. M HUN ER 2,033,577

. Filed Nov. 20, 1935 2 Sheets-Sheet 2 M W HUNTER I INVENTOR BY f IATTbRNEY Patented Mar. 10, 193

UNITED STATES rum-- Melmoth w. Hunter, Lorain, Ohio Application November20, 1933, Serial No. 698,831

. 14 Claims." (01. 103-113) This invention relates to improvements inpumps and while adapted for use generally wherever -it may beadvantageously employed,

. the invention is particularly intended for application to pumps forcirculating water in the cooling systems of internal combustion enginesin which connection it will be illustrated in the drawings andhereinafter described.

Objects of the invention are to provide a pump ter within the casingwill be given a rapid whirling motion suficient to cause it to becentrifugally expelled through a discharge opening in the peripheralwall of said casing and to provide a casing having a magneticallyattractive wall and a non-magnetic diaphragm forming an opposed wall,said walls provided with axially alined, op-;

posed annular seats which form bearing surfaces which progressivelyengage the peripheral portions of said wabbler element and which limitthe-wabbling movement thereof.

A particular object is to provide a. centrifugal pump having amagnetically attractive impelling element whichwill impart a rapidwhirling movement to 'a liquid by a circumferentially progressingtipping movement instead of the usual rotary movement and to completelyenclose said impelling element and provide magnetic means for providingsuch tipping movement of the impelling element and to thereby provide anefilcient pump having no packing glands and havingan impelling elementwhich may be operated continuously. for a long period of time withoutlubrication and without being materially efiected b wear.

A further object is to provide a practical, centrifugal pump having acasing enclosing a pump cavity with the impelling element therein and toenclose said casing with a non-magnetic dia phragm and to provide afined solenoid having- ,vention,

the peripheral portions of said impelling element, without the use ofbrushes or other movable connections and to provide a pump in whichaliquid may be congealed by freezing or otherwise and which will not bebroken by operating Y the driving means while the liquid is socongealed. A still further object is to provide a pumpof the characterabove indicated which 'may be operated by making, breaking or otherwisecontrolling the electrical circuit in which the electro-magnet isinterposed, either manually, thermostatically or otherwise.

Other objects will be made apparent by the following specification inwhich a specific adaptation of the invention will be described withreference to the illustrative embodiment thereof disclosed in thedrawings, it being understood that changes and modifications may be madewhich come within the spirit of the invention as set forth in theappended claims:

In the drawings:-

Figure l is a side elevational view of a portion of an internalcombustion engine equipped with a pump constructed in accordance withthis in Figure 2 is a central, vertical, longitudinal view of a pumpconstructed in accordance with this invention,

Figure 3 is a; cross sectional view taken as indicated by the lines 3-3of Figure 2 with the so wabbler element removed.

Figure 4 is a plan view of the interior face of the non-magneticdiaphragm employed in reducing the invention to practice.

Figure 5 is a plan view of the impelling elet5 ment employed in theadaptation of the invention illustrated.

an internal combustion engine and the numeral "i the motor head, Thehead l and the block t are provided with the usual water cavity 8. Thenumeral 8 denotes a pump casing which forms an'integral'part of the headi and projects forwardly therefrom. The forward wall It of the head Iforms the rear wall of the pump cavity I l'. The pump cavity ii is ofconvolute iorm, its pe- I ripheral 'wall forming a single convolution,and is provided on the rear wall l0 with'a centrally positioned,cylindrical passage II which communicates with the water cavity 8.

The numeral l3 denotes an outlet nipple which projects upwardly from theupper side of the pump casing 9. The bore ll of the nipple i3 leads fromthe outermost portion of the convoluted wall and communicates with thecavity H. The wall of the pump casing 9 is relatively thicker at oneside of the bore l4 and the cavity ll gradually enlarges to provide agreater diameter at the opposite side of the bore l4. The

wall of the bore [4 curves at the inner end there-.

of toward the enlarged side of the cavity ll thus terminating at thethickened portion of the wall 9 at a sharp angle to the circumferentialwall of the cavity, while the opposite side of the wall of the bore l4forms a continuous curved line which is in fact a continuation of thewall of the cavity. The wall I6 is thickened around the opening I 2 onthe forwardly presented side thereof to provide an annular seat l5 whichis in the form of a truncated cone with the bore i2 in the exact centerthereof. The casing 9 is provided with an enlarged opening IS on theforward side thereof, the opening l6 being further enlarged to provide aseat I! in which is mounted a diaphragm l8 which completely closes theopening IS, a suitable gasket I9 being employed to seal the jointbetween the diaphragm l8 and the seat ll.

The numeral 20 denotes a magnet casing which is closed at the outer endand is provided at the inner end thereof with a face adapted to fitagainst the forward wall of the casing 9 and against the peripheralportions of the diaphragm IS. The magnet casing 20 is secured to thepump casing 9 by means of the bolts 2| or other suitable means. Themagnet casing 20 is provided with a rearwardly presented annular cavity22 in which is operatively mounted a solenoid consisting of a coil orcoils 23, and the central portion 24 of the magnet casing 26 projectsrearwardly in the form of a cylinder and is provided with an axial borewhich forms a bearing for the shaft 25.

The diaphragm I8 is composed of brass or other non-magnetic material andthe main body thereof is disposed in parellel relation with the mainportion of the wall I0. The diaphragm It has a relatively thin centralportion which is pressed rearwardly to provide the annular seat I So.which is in the form of a truncated cone and which is directly opposedto the annular seat l5. The seat I 8a is arranged in co-axial alinementwith the seat l5 and in the particular adaptation of the inventionshown, said seats form conical surfaces, every portion of which is inalinement with the surface of the other seat, diametrically oppositethereto.

The numeral 26 denotes a wabbler element which is in the form of a diskhaving a central opening 21 and provided adjacent the center thereofwith a plurality of openings 28. The numeral 29 denotes a pin which issuitably secured to the central portion of the diaphragm I 6 so as toproject therefrom. The wabbler element 26 is positioned in the cavity IIwith the pin 29 loosely received in the opening 21 in a position wherethe marginal portion of one side thereof will fit against a portion ofthe seat l5 at one side thereof and the diametrically opposed marginalportion of the other side of the disk will fit against the seat l8a,thus mountingthe wabbler element 26 for tipping movement across thecavity in every direction, this tipping movement being limited only bythe seats l5 and i811.

In the particular adaptation of the inventionshownjthe peripheralportion of the wabbler element 26 tapers outwardly to a relatively thickedge portion. The pin 29 is provided at the for ward end thereof with arounded'base 3| and at the rear end thereof with a head 30 whichfunctions to retain the wabbler element 26 in a central portion in thecavity II and which will prevent the wabbler element 26 from being drawnflat against either side of the cavity 18. Means are then provided formoving the wabbler 26 to an operative position. The central portion 24of the magnet casing 20 terminates in spaced relation to the rear end ofthe casing. A portion of the shaft 25-is enlarged to form a shoulder '32which fits against the rear end of the central portion 24.

The rear end portion 25a of the shaft 25 projects rearwardly from theshoulder 32 at an inclination to the axis thereof. The portion 25aterminates in close, spaced relation to the diaphragm l8 whereby therearwardly presented face thereof will always be positioned directly infront of some portion of the seat l8a. The casing 26 and the centralportion thereof 24 is composed of iron or other material which is a goodconductor of magnetic flux. The shaft 25 or at least the end portion 25ais composed of steel whereby it may be energized by the operation of thecoil 23 to form a permanent magnet. The shaft 25 projects forwardly fromthe casing 20 and is provided with a drive sheave 33 which is fixedlysecured thereto by means of the set screw 34 or other suitable means. Inthe particular adaptation of the invention, the shaft 25 is provided onthe forward end'there'of with a fan 35 which is suitably fixed thereto.

The diaphragm I8 is composed of brass or other non-magnetic materialwhile the walls of the casing 9 are composed of iron or other materialwhich is a good conductor of magnetic flux.

In operation, the coil 23 is energized by operatively connecting it to asource of electrical energy. As the rearwardly presented portion 25a ofthe shaft 25 is presented toward a portion of the seat lBa, one side ofthe wabbler element 26 will be drawn against the seat IBa, while theside of the wabbler element 26 diametrically opposite will be drawn fiatagainst the opposite side of the seat I5. As the shaft 25 is rotated bymeans of the belt 36, the rearwardly presented end portion 25a of theshaft 25 travels in an annular path which and will flow through thewabbler element l8 to' the wall 10 whereupon it will flow through thewall 20 thus completing the magnetic circuit. As the wabbler element 26is provided with an opening 28, the water thus expelled through thenipple 13 will be replaced by water drawn through the bore l2. Theopening 28 acts to permit the inlet flow of liquid to both sides of thewabble element 26. I

, While I have described the laterally divertedpole piece 25a ascomposed of steel to form a permanent magnet, it is understood that thesame may be composed of iron or other suitable material which will notbe permanently magnetized. The coil 23may be in the form of one, two orany number of coils, wound in accordance with the result desired. Anadditional coil may be sub- 5 stituted to form an electro-magnet whichwill function as the permanent magnet formed by the pole piece 254: orthe coil 23 may be formedoi individual windings adapted to beselectively employed. to produce the desired pumping action.

The flow of electrical current to the coil 22 or to one or more coilscomposing same maybe thermostatically controlled to produce any desiredoperation of the propeller element, it being thus possible to bring thewabbling movement of the claim as new and desire to secure by LettersPatent is:-- V

1. .In a pump of the character described, a suitable casing enclosing anunobstructed chamber extending continuously between the walls thereof,said chamber having an axial inlet openingand a peripheral dischargeopening, an impeller" mounted therein for tilting movement in everydirection and means to progressively tilt said impeller in continuous,circumferential progression.

2. In a pump of the character described, a suitable casing having sidewalls with a pump chamber extending continuously therebetween, one ofsaid side walls having a centrally positioned inlet opening leading tothe central portion of said chamber; said chamber having a peripheraldischarge opening leading from said chamber, a disk mounted therein fortilting movement across the cavity of the casing in every direction andmeans to progressively tilt said disk in continuous, circumierentialprogression. 3. In a pump of the character described, a suitable casingenclosing a continuous pump chamber, said chamber having a central inletopening and a discharge opening positioned radially outwardly withrespect to said inlet opening, an impeller iulcrumed therein" fortilting movement in every direction and means outside of said casing toprogressively tilt said disk in continuous, circumferential progression.

4. In a pump of the character described, a casing having opposed sidewalls and a peripheral cavity, a disk positioned in said casing fortipping movement-in any direction to bridge the space between saidwalls, said casing provided with an inletport leading'to the centralportion of said cavity and having a discharge opening leading from saidcavity at a point spaced outwardly from the center thereof and means totip said dish in continuous, circumferential progression.

6. In a pump ofthe character described, a casing having opposed sidewalls, and a peripheral Wall enclosing an unobstructed cavity, a diskpositioned in said casing for tipping movement in every direction toextend between said walls,

said chamber provided with a'centrally positioned inlet opening and adischarge opening positioned radially outwardly with respect to saidinlet opening, saidside walls provided with opposed, axially allned'seats concentrically arranged around the axis of the pump, thediametrically opposed marginal portions of said disk adapted to bearagainst said seats, andmeans to rapidly tip said disk in continuous,circumferential progression. v I '7. In a pump of the characterdescribed, a casing having a cavity'- with oppositely disposed, similarside walls and a convolute peripheral wall, said casing having an inletopening in one side wall thereof leading to the central portion of saidcavity and a dischargeopening in the peripheral wall thereof leadingfrom said cavity, a circular impeller element fulcrumed on an extendedaxis of said inlet'opening for tilting movement in every direction, saidimpeller element being of sufficient diameter to simultaneously contactat an acute angle withboth side walls and means operable toprogressively tilt said impeller element in continuous, circumferentialprogression.

8. In a pump of the character described, a

casing having a cavity with oppositely disposed.

side walls of similar contour and a peripheral wall enclosing anunpartitioned cavity, said casing having an inlet opening leading to thecentral portion of said cavity and a discharge opening leading from saidcavity at a point spaced radially outwardly with respect to said inletopening, a circular impeller element mounted in said casing for tiltingmovement in every direction, said impeller element being of sufilcientdiameter to simultaneously contact with both side walls, said impellerelement provided with an opening in the central portion thereof andmeans operable to progressively tilt said impeller element incontinuous, circumferential progression.

9. In a. pump oi the character described, a casing having a cavity withoppositely disposed side walls of similar contour and a peripheral wall.said walls enclosing an unobstructed cavity, saidcasing having an inletopening in one side wall thereof leading to the central portion of saidcavity and a discharge opening leading from a peripheral portion of saidcavity; a circular impeller element in said casing, said impellerelement loosely iulcrumed on an extended axis of said inlet opening fortilting movement in every direction, said in'peller element being ofsuficient diameter to simultaneously contact with both side walls, anannular seat on each side for contacting with the marginal portion ofsaid impeller element and magnetic mean's operable'to progressively tiltsaid impeller element in continnous, circumferential progression.

10. In a pump, a casing composed mainly of magnetically conductivematerial, said casing having side walls and a peripheral wall, saidcasing having an inlet opening in one side wall thereof and havingadischarge opening in the peripheral wall thereof, the forward wall ofsaid casing being in the-form of a relatively thin diaphragm oinon-magnetic material, a disk positioned in'said casing, said diskadapted to be.

tilted across the cavity of said casing with one edgeportion contactingwith the rear wall thereof and the diametrically opposite edge portioncontacting with said diaphragm, an electromagnet having. a rotatablecore connected to said casing, the said core terminating in an inclinedpole portion presented to the outer face of said diaphragm and adaptedwhen rotated to travel in an annular path coincident with the peripheraledge of said disk and means to rotate said core and tilt said disk incontinuous, circumferential progression.

11. In a pump, a casing composed mainly of magnetically conductivematerial, said casing having parallel side walls and a peripheral wall,said casing having an inlet opening in one side wall thereof and havinga discharge opening in the peripheral Wall thereof, the forward wall ofsaid casing being in the form of a relatively thin diaphragm ofnon-magnetic material, opposed, axially alined, annular seats on theinner face: of said side walls, a disk of magnetically conduc tivematerial positioned in said casing, said their adapted to be tiltedacross the cavity of the casing with opposite edges thereof simcltaneorcontacting with said seats, electric in having a rot""'able coreconnected to said core terminat' in an inclined 1 presented to the orface of die"; adapted when rotated to travel in a. path coincident withthe peripheral edge 0. disk thereby into 1g said disk in the of saidmagnet an cans to rapidly re said core and tilt said disk in continuous,circumferential progression.

12 In a pump, a casing composed of magnetically conductive material,said casing having substantially parallel side walls and a peripheralwall, said casing having a centrally positioned inlet opening in oneside wall thereof and having a suitable discharge opening, one wall ofsaid casing being relatively thin and composed of magneticallynon-conductive material, opposed, axially alined, conical seats on saidside walls, a disk positioned in said casing, with one edge por tionthereof bearing against one of said seats and the diametrically opposededge portion thereof bearing against the other seat, an electric magnetframe composed of magnetic conductive material operatively connected tosaid casing,

a magnet coil in said frame, a suitable core rotatably mounted on saidframe and extendin through said coil, the said core terminating in adiverted pole portion presented in close spaced relation to the outerface of said thin side wall and adapted when rotated to travel in anannular path coincident with the seat on said thin side wall, said diskbeing thus interposed in the magnetic circuit of said coil, means toenergize said coil and means to rapidly rotate said core to cause acontinuous, circumferentially progressing tilting movement of said disk.

13 In a pump, a casing composed of magnetically conductive material,said casing having substantially parallel side walls and a peripheralwall, said casing having a centrally positioned inlet opening in oneside wall thereof and having a suitable discharge opening, one wall ofsaid casing being relatively thin and composed of eticellynon-conductive material; opposed, nw, conical seats on said side walls,a i itioned in said casing, with one edge porxion thereof bearingagainst one of said seats and p aa w caring against the other seat, anelectric mag- .et frame composed of magnetic conductive materialoperatively connected to said casing, a solenoid coil fixed in saidframe, a rotatably Bid-milled core for said solenoid, said coreprojecting rearwardly from said coil and terminating in an end portiondiverted from the axis of the solenoid with the end thereof close tosaid diaphragm and adapted when rotated to cause an operative movementof said wabbler element.

14. In a pump of the character described, a casing having a wabblerelement mounted therein for continuous, circumferential-tippingmovement, a solenoid coll fixed in coaxial alignment therewith, a corerotatably mounted in said coil, said core having a diverted end portionpositioned to influence said wabbler element and means to rotate saidcore.

MELMO'I'H wl HUNTER.

he diametrically opposed edge portion thereof

